不同测试条件对通用塑料热变形温度的影响  

Effect of different test conditions on thermal deformation temperature of general purposed plastics

作　　者：王忠[1] WANG Zhong(China National Accreditation Service for Conformity Assessmen,Beijing 100021,China)

机构地区：[1]中国合格评定国家认可委员会,北京100021

出　　处：《理化检验（物理分册）》2022年第12期4-7,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：分析了通用塑料中不同放置方法的PP,HIPS,ABS以及不同载荷对热变形温度检测结果的影响,结果表明:对于非结晶材料ABS和HIPS,在相同标准挠度、相同载荷时,试样侧放与平放的测试结果基本一致;在相同放置方式、相同标准挠度,采用不同载荷进行测试时,方法B的热变形温度比方法A高10℃左右,方法A的热变形温度比方法C高10℃左右;对于部分结晶材料,在同样测试方法时,添加了玻璃纤维PP材料的热变形温度明显升高;在相同放置方式、相同标准挠度时,载荷越大,得到的结果越小;将相同的试样平放,载荷为1.80 MPa,在不同的标准挠度下,热变形温度测试结果的一致性较好。The effects of PP, HIPS, ABS in different placement methods and different loads on the thermal deformation temperature test results were analyzed. The results show that for the amorphous materials ABS and HIPS, under the same standard deflection and load, the test results of side placement were basically consistent with those of flat placement. In the same placement, the same standard deflection, using different loads for testing, the thermal deformation temperature of method B was about 10 ℃ higher than method A, the thermal deformation temperature of method A was about 10 ℃ higher than method C. For some crystalline materials, in the same test method, the thermal deformation temperature of PP material with glass fiber was obviously increased. In the same placement method and the same standard deflection, the greater the load, the smaller the result obtained.The same sample was placed flat, and the load was 1.80 MPa, under different standard deflections, the thermal deformation temperature test results were in good agreement.

关 键 词：通用塑料 热变形温度 平放 侧放 载荷 

分 类 号：TB33[一般工业技术—材料科学与工程]